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Vulnerability details: VCID-ec7q-z5hd-f3ey
Vulnerability ID VCID-ec7q-z5hd-f3ey
Aliases CVE-2020-13665
GHSA-wxqp-jwc9-g39x
Summary Drupal Core Access bypass vulnerability Access bypass vulnerability in Drupal Core allows JSON:API when JSON:API is in read/write mode. Only sites that have the read_only set to FALSE under jsonapi.settings config are vulnerable. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.x versions prior to 9.0.1.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-863 Incorrect Authorization
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
epss 0.0055 https://api.first.org/data/v1/epss?cve=CVE-2020-13665
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-wxqp-jwc9-g39x
cvssv3.1 9.8 https://github.com/drupal/core
generic_textual CRITICAL https://github.com/drupal/core
cvssv3.1 9.8 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13665.yaml
generic_textual CRITICAL https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13665.yaml
cvssv3.1 9.8 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13665.yaml
generic_textual CRITICAL https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13665.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-13665
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2020-13665
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2020-13665
cvssv3.1 9.8 https://www.drupal.org/sa-core-2020-006
generic_textual CRITICAL https://www.drupal.org/sa-core-2020-006
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-13665
https://github.com/drupal/core
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13665.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13665.yaml
https://nvd.nist.gov/vuln/detail/CVE-2020-13665
https://www.drupal.org/sa-core-2020-006
cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
GHSA-wxqp-jwc9-g39x https://github.com/advisories/GHSA-wxqp-jwc9-g39x
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/drupal/core
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13665.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13665.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-13665
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-13665
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.drupal.org/sa-core-2020-006
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.66967
EPSS Score 0.0055
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T09:08:52.358855+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-wxqp-jwc9-g39x/GHSA-wxqp-jwc9-g39x.json 37.0.0